AI Site Domain Extensions 2026
Compiled 2026-11-06. Ranked by the extension an AI tool site uses as its main domain. .com is No. 1, .ai is No. 2, .io is No. 3.
Compiled on 2026-11-06. Every price comes from the Cloudflare Registrar table opened that day. The order follows the extensions an AI tool site uses as its main domain. .com is No. 1, .ai is No. 2, and .io is No. 3, all in S. .app and .dev are in S as well: tool sites use them, and the page says a valid HTTPS certificate is required. A low renewal does not move .page, .xyz, .org, or .net ahead of those five.
Editor order for AI tool-site domains
S is .com, .ai, .io, .app, and .dev. A is .co, .tech, .tools, .studio, and .sh. Where the registration cell shows two prices, year two still follows the renewal column.
| Rank | TLD | Cloudflare registration | Cloudflare renewal | Policy on the page |
|---|---|---|---|---|
| 1 | .com | $11.17 | $11.17 | Registration and renewal match. The price table does not add a minimum term. This is the main domain for an AI tool site. |
| 2 | .ai | $80.00 | $80.00 | Cloudflare lists $80 a year. Porkbun says registration and renewal require at least 2 years, and a transfer includes a 2-year renewal. |
| 3 | .io | The registration cell shows both $50.00 and $32.00 | $50.00 | Renewal is $50.00. $32.00 stays in the registration cell. |
| 4 | .app | The registration cell shows both $14.20 and $8.20 | $14.20 | .app is on the Google Registry HSTS preload list and cannot be removed. Without a valid HTTPS certificate the browser does not open the page. |
| 5 | .dev | The registration cell shows both $12.20 and $8.20 | $12.20 | .dev is on the same HSTS preload list. |
| 6 | .co | $30.00 | $30.00 | Registration and renewal match. |
| 7 | .tech | The registration cell shows both $49.20 and $9.99 | $49.20 | The $9.99 figure stays in the registration cell. Year two follows $49.20. |
| 8 | .tools | $28.20 | $28.20 | Registration and renewal match. |
| 9 | .studio | $31.20 | $31.20 | Registration and renewal match. |
| 10 | .sh | $45.00 | $45.00 | Registration and renewal match. |
Cheaper renewals that stay off the main domain
| Rank | TLD | Registration | Renewal | Why it sits outside the top 10 |
|---|---|---|---|---|
| 11 | .page | $10.20 | $10.20 | This is the lowest renewal on the sheet. Porkbun lists it on the HSTS preload list. The main domain for an AI tool site still uses .com, .ai, or .io. |
| 12 | .xyz | $12.30 | $11.20 | Renewal is below registration. |
| 13 | .org | The registration cell shows both $11.20 and $8.50 | $11.20 | Renewal uses the renewal column. $8.50 stays in the registration cell. |
| 14 | .net | $11.86 | $11.86 | Registration and renewal match. |
| 15 | .new | $400.20 | $400.20 | This is the highest renewal on the sheet. Porkbun also lists .new on the HSTS preload list. |
How this ranking was built
The rank follows whether an AI tool site would use the extension as its main domain. .com, .ai, and .io lead. .app and .dev follow, because tool sites use them and Porkbun lists them on the HSTS preload list. The dollars are copied from https://pricing.registrar.cloudflare.com/. When the registration cell prints two numbers, renewal uses the renewal column. The .ai yearly price is Cloudflare's. The two-year minimum is Porkbun's product page. The two vendors' prices are not added together.
| Source | Link | Opened | What it checks |
|---|---|---|---|
| Cloudflare prices | https://pricing.registrar.cloudflare.com/ | 2026-11-06 | Registration and renewal columns. |
| Porkbun .ai | https://porkbun.com/tld/ai | 2026-11-06 | Two-year minimum. Prices stay off the Cloudflare table. |
| Porkbun HSTS | https://kb.porkbun.com/article/96-hsts-preload-and-google-registry | 2026-11-06 | .app, .dev, .page, and .new. |
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AI Site Domain Extensions 2026
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